Campur Formation

The Campur Formation (Kca) is a geologic formation of the Petén Basin of northern Guatemala. The subtidal limestone preserves fossils dating back to the Late Cretaceous period.^[1]

Campur Formation
Stratigraphic range: Turonian-Maastrichtian
Type	Formation
Underlies	Petén Group: Sepur Formation
Overlies	Cobán Formation
Lithology
Primary	Limestone
Other	Dolomite, conglomerate, siltstone
Location
Coordinates	16.0°N 90.5°W / 16.0; -90.5
Approximate paleocoordinates	24.2°N 80.1°W / 24.2; -80.1
Region	Alta Verapaz, Petén
Country	Guatemala
Extent	Petén Basin
Type section
Named for	Campur
Named by	Vinson
Year defined	1962
Campur Formation (Guatemala)

Description

The formation consists of fossiliferous limestones with minor levels of dolomites. The formation is rich in rudists and miliolids.^[2] Breccias and clayey conglomerates, siltstones and limestones occur in the formation. The formation was probably deposited in a fore-reef environment in an open shelf system.^[3] The lower boundary of the Campur Formation is transitional into the underlying Cobán Formation. The formation is overlain by the Sepur Formation of the Petén Group.^[4] The Campur Formation is laterally equivalent with the upper part of the Ixcoy Formation of western Guatemala.^[5]

Fossil content

The following fossils have been uncovered from the formation:^[6][7]

• Accordiella cf. conica
• Bournonia cardenasensis, B. excavata^[8]
• Distefanella lombricalis^[9]
• Senalveolina aubouini
• Sulcoperculina sp.

See also

• List of fossiliferous stratigraphic units in Guatemala